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April 1st, 2010
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Rev.3.01, May 10, 2006, page 1 of 6
HD74LS47
BCD-to-Seven-Segment Decoder / Driver (with 15 V Outputs)
REJ03D0410-0301
Rev.3.01
May 10, 2006
HD74LS47 features active-low outputs designed for driving incandescent indicators directly. This device has full
ripple-blanking input / output controls and a lamp test. Display patterns for BCD inpu t counts above 9 are unique
symbols to authenticate input conditions. This circuit incorporates automatic leading and / or trailing-edge zero-
blanking control (RBI and RBO). Lamp test (LT) of these types may be performed at any time when the BI / RBO
node is at a high level. It contains an overriding blanking input (BI) which can be used to control the lamp intensity of
pulsing or to inhibit the outputs. Inputs an d outputs are entirely compatible for use with TTL or DTL logic outputs.
Features
• Ordering Information
Part Name Package Type Package Code
(Previous Code) Package
Abbreviation Taping Abbreviation
(Quantity)
HD74LS47P DILP-16 pin PRDP0016AE-B
(DP-16FV) P —
HD74LS47FPEL SOP-16 pin (JEITA) PRSP0016DH-B
(FP-16DAV) FP EL (2,000 pcs/reel)
Note: Please consult the sales office for the above packa ge availability.
Pin Arrangement
(Top view)
V
CC
GND
B
C
LT
BI/RBO
RBI
D
A
f
g
b
a
c
d
e
15
161
2
3
4
5
6
7
14
89
10
11
12
13
Outputs
Inputs
Inputs
B
C
D
A
RBI
BI/RBO
LT
f
g
d
e
c
b
a
HD74LS47
Rev.3.01, May 10, 2006, page 2 of 6
Function Table
Inputs Outputs
Decimal or
Function LT RBI D C B A BI/
RBO a b c d e f g
Note
0 H H L L L L H ON ON ON ON ON ON OFF
1 H X L L L H H OFF ON ON OFF OFF OFF OFF
2 H X L L H L H ON ON OFF ON ON OFF ON
3 H X L L H H H ON ON ON ON OFF OFF ON
4 H X L H L L H OFF ON ON OFF OFF ON ON
5 H X L H L H H ON OFF ON ON OFF ON ON
6 H X L H H L H OFF OFF ON ON ON ON ON
7 H X L H H H H ON ON ON OFF OFF OFF OFF
8 H X H L L L H ON ON ON ON ON ON ON
9 H X H L L H H ON ON ON OFF OFF ON ON
10 H X H L H L H OFF OFF OFF ON ON OFF ON
11 H X H L H H H OFF OFF ON ON OFF OFF ON
12 H X H H L L H OFF ON OFF OFF OFF ON ON
13 H X H H L H H ON OFF OFF ON OFF ON ON
14 H X H H H L H OFF OFF OFF ON ON ON ON
15 H X H H H H H OFF OFF OFF OFF OFF OFF OFF
1
BI X X X X X X L OFF OFF OFF OFF OFF OFF OFF 2
RBI H L L L L L L OFF OFF OFF OFF OFF OFF OFF 3
LT L X X X X X H ON ON ON ON ON ON ON 4
H; high level, L; low level, X, irrelevant
Notes: 1. The blanking input (BI) must be open or held at a high logic level when output functions 0 through 15 are
desired. The ripple-blanking input (RBI) must be open or high if blanking of a decimal zero is not desired.
2. When a low logic level is applied directly to the blanking input (BI), all segment outputs are off regardles s of
the level of any other input.
3. When ripple-blanking input (RBI) and inputs A, B, C, and D are a low level with the lamp test input hi gh, all
segment outputs go off and the ripple-blank ing output (RBO) goes to a low level (response condition).
4. When a blanking input / ripple blanking output (BI / RBO) is open or h eld high and a low is applied to the
lamp-test input, all segment outputs are on.
a
543210 6 7 8 9 101112131415
b
d
c
f
e
g
HD74LS47
Rev.3.01, May 10, 2006, page 3 of 6
Block Diagram
Blanking Input or
Ripple Blanking
Output (BI/RBO)
Lamp Test
Input (LT)
Ripple Blanking
Input (RBI)
Outputs
Inputs
A
B
C
D
a
b
c
d
e
f
g
Absolute Maximum Ratings
Item Symbol Ratings Unit
Supply voltage VCC 7 V
Input voltage VIN 7 V
Output current
(tw ≤ 1ms,duty cycle ≤ 10%) IO(peak) 200 mA
Output current (off) IO(off) 1 mA
Power dissipation PT 400 mW
Operating temperature Tupr –20 to +75 °C
Storage temperature Tstg –65 to +150 °C
Note: Voltage value, unless otherwise noted, are with respect to network ground terminal.
HD74LS47
Rev.3.01, May 10, 2006, page 4 of 6
Recommended Operating Conditions
Item Symbol Min Typ Max Unit
Supply voltage VCC 4.75 5.00 5.25 V
Output voltage (off) VO(off) — — 15 V
Input current (on) IO(on) — — 24 mA
IOH — — –50 µA
Output current IOL — — 3.2 mA
Operating temperature Topr –20 25 75 °C
Electrical Characteristics
(Ta = –20 to +75 °C)
Item Symbol min. typ.* max. Unit Condition
VIH 2.0 — — V
Input voltage VIL — — 0.8 V
VOH 2.4 — — V
VCC = 4.75 V, VIH = 2 V, VIL = 0.8 V, IOH
= –50 µA
— — 0.4 IOL = 1.6 mA
BI / RBO VOL — — 0.5
V IOL = 3.2 mA VCC = 4.75 V,
VIH = 2 V, VIL = 0.8 V
— — 0.4 IO(on) = 12 mA
Output
voltage
a to g VO(on) — — 0.5
V IO(on) = 24 mA VCC = 4.75 V,
VIH = 2 V, VIL = 0.8 V
Output
current a to g IO(off) — — 250 µA VCC = 5.25 V, VIH = 2 V, VIL = 0.8 V,
VO(off) = 15 V
I
IH — — 20 µA VCC = 5.25 V, VI = 2.7 V
All input
except
BI / RBO — — –0.4 mA
BI / RBO
IIL
— — –1.2 mA
VCC = 5.25 V, VI = 0.4 V Input current
I
I — — 0.1 mA VCC = 5.25 V, VI = 7 V
Short-circuit
output current BI / RBO IOS –0.3 — –2 mA VCC = 5.25 V
Supply current** ICC — 7 13 mA VCC = 5.25 V
Input clamp voltage VIK — — –1.5 V VCC = 4.75 V, IIN = –18 mA
Notes: * VCC = 5 V, Ta = 25°C
** ICC is measured with all outputs ope n and inputs at 4.5 V.
Switching Characteristics
(VCC = 5 V, Ta = 25°C)
Item Symbol Input min. typ. max. Unit Condition
A — — 100
Turn-on time ton RBI — — 100 ns
A — — 100 Turn-off time toff RBI — — 100 ns CL = 15 pF, RL = 665 Ω
HD74LS47
Rev.3.01, May 10, 2006, page 5 of 6
Testing Method
Test Circuit
4.5V
A
B
C
D
LT
RBI
BI/RBO
Input
P.G.
Z
out
= 50Ω
See Function Table
Output
V
CC
a
b
d
c
e
f
g
R
L
C
L
Note: CL includes probe and jig capacitance.
Waveform
t
off
t
on
V
OH
V
OL
0 V
3 V
V
OH
V
OL
t
on
t
off
10%
90%
1.3 V
1.3 V 1.3 V
1.3 V 1.3 V
1.3 V
10%
90%
Input
In phase output
Out of phase output
t
TLH
t
THL
Note: Input pulse: tTLH ≤ 15 ns, tTHL ≤ 6 ns, PRR = 1 MHz, duty cycle 50%.
Testing Table
Inputs Outputs
Item RBI D C B A a b c d e f g
4.5 V GND GND GND IN OUT — — OUT OUT OUT —
4.5 V GND GND 4.5 V IN — — OUT — OUT — —
4.5 V GND 4.5 V 4.5 V IN OUT OUT — OUT OUT OUT OUT
ton
toff IN GND GND GND GND OUT OUT OUT OUT OUT OUT —
HD74LS47
Rev.3.01, May 10, 2006, page 6 of 6
Package Dimensions
7.62
MaxNomMin
Dimension in Millimeters
Symbol
Reference
19.2
6.3
5.06
A1
Z
b3
D
E
A
bp
c
θ
e
L
e1
0.51
0.56
1.30
0.19 0.25 0.31
2.29 2.54 2.79
0° 15°
20.32
7.4
0.40 0.48
1.12
2.54
1
p
1
3
1 8
16 9
e
b
A
LA
Z
e c
E
D
b
0.89
θ
( Ni/Pd/Au plating )
P-DIP16-6.3x19.2-2.54 1.05g
MASS[Typ.]
DP-16FVPRDP0016AE-B
RENESAS CodeJEITA Package Code Previous Code
0.80
0.15
1.27
7.50 8.00
0.400.34
A1
10.5
MaxNomMin
Dimension in Millimeters
Symbol
Reference
2.20
0.900.700.50
5.50
0.200.100.00
0.46
0.250.200.15
7.80
8°0°
0.12
1.15
10.06
L1
Z
HE
y
x
θ
c
bp
A2
E
D
b1
c1
e
L
A
*1
*2
E
81
16 9
xM
p
*3
y
F
Index mark
b
D
E
H
Z
A
Terminal cross section
( Ni/Pd/Au plating )
p
c
b
1
1
Detail F
L
L
A
θ
NOTE)
1. DIMENSIONS"*1 (Nom)"AND"*2"
DO NOT INCLUDE MOLD FLASH.
2. DIMENSION"*3"DOES NOT
INCLUDE TRIM OFFSET.
e
P-SOP16-5.5x10.06-1.27 0.24g
MASS[Typ.]
FP-16DAVPRSP0016DH-B
RENESAS CodeJEITA Package Code Previous Code
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